“The Smashing Machine,” out October 3, comes from writer/director Benny Safdie, who marks his solo film directorial debut with the movie. He is best known for working alongside his brother Josh, co-directing the acclaimed “Uncut Gems,” among other films.

Dwayne Johnson stars as former wrestler and UFC star Mark Kerr in a new trailer for Benny Safdie's "The Smashing Machine."

Dwayne "The Rock" Johnson transforms into MMA and UFC fighter Mark Kerr in Benny Safdie's A24 biopic "The Smashing Machine," releasing this fall.